a=['apple','orange',123,0.1111]
a.append("我是追加")
print(a[0],a[4])
del a[0]
del a[3]
print('apple' in a)
for i in a:
    print(i)
print(len(a))
a.insert(1,['liu','cali',123,456])
print(a)
print(a[1:])
print(a[2:5])
print(a[1:-3])


